LAST CHANCE!: ON YOUR MARX...
For now, “Marxism” is more than a sociopolitical viewpoint — it’s a terrific little show about the subversive power of humor, as taught by Groucho, Chico, Harpo, Gummo and Zeppo. For Chelsea’s 303 Gallery, curators Jacob and Jens Hoffmann rounded up some Marx memorabilia — movie posters, props, portraits, one of Harpo’s wigs — and teamed it with work by artists who’ve embraced the brothers’ brand of madcap anarchy. To wit: Marcel Duchamp’s mustachioed Mona Lisa; Richard Prince’s acrylic riffs on Groucho; and Tim Lee’s hilarious re-creation, on side-by-side video monitors, of the mirror scene in “Duck Soup.” Need the real, reel thing? Five Marx Brothers’ movies are unspooling continuously in the gallery, where you can plop down in a plush, red theater seat and watch them. Fun? You bet your life! Through 6 tonight, 547 W. 21st St.; 303gallery.com
— Barbara Hoffman

GET A TASTE!: SHACK UP
Shake Shack, look out. There’s a new shack in town, and it comes with sand, sun and fun — and beer and wine. The recently opened Brooklyn Beach Shack in Brooklyn Bridge Park serves up Brooklyn-
centric burgers (starting at $7.95) right beside the pop-up pool. During the day, pool visitors flock to the grub, but at night, a different crowd entirely swings by for beer and wine (starting at $5) on the man-made beach.
The most recent menu addition, the Bleu Ivy burger, ($9.95) — named for Beyoncé and Jay-Z’s baby — comes topped with bleu cheese and green peppercorn mayo.
“I think they’d think it’s pretty cool,” laughs general manager Tracee Loran. “They’re very Brooklyn, and it’s a very classy burger! [Maybe] we could get them to come and check it out.”
Swing by tomorrow for hula-hooping contests throughout the day.
Brooklyn Bridge Park at Furman Street between Piers 1 and 2; 718-810-5583, brooklynbeachshack.com
— Gregory E. Miller

WATCH IT!: NAIL -SAFE
Joan Blondell and Glenda Farrell play a pair of wisecracking Midwestern manicurists who have to take it on the lam to New York City in William Keighley’s “Kansas City Princess’’ (1934). Their efforts to elude gangster Robert Armstrong — whose ring they’ve lost — at one point includes posing as Girl Scouts. This funny, if little known, 64-minute Warner Bros. comedy is showing tomorrow at 4 p.m. at the Museum of Modern Art along with another recent acquisition, David Gerson’s “Ultra Violet for Sixteen Minutes’’ (2011), a short interview with the born-again, erstwhile Andy Warhol superstar. 53rd Street between Fifth and Sixth avenues. Info: moma.org
— Lou Lumenick

Everett Collection / Everett Col

DON'T MISS!: A WARD FOR BROOKLYN
When asked how, between She & Him, his duo with Zooey Deschanel, and supergroup Monsters of Folk, M. Ward still manages to keep up his solo career, the troubadour responds: “It’s easier than it might look; I have a calendar on my Android.” On Tuesday, Ward joins local legends Yo La Tengo and “Daily Show” comedian Wyatt Cenac for a Celebrate Brooklyn! benefit to support the free concert series at the Prospect Park Bandshell. “New York probably has the best audiences in America,” Ward says, where “people just seem to get involved in the music in ways that you can see.” So expect to be part of great show with, Ward says, “nothing pre-programmed, just actual people playing their instruments.”
Ninth Street and Prospect Park West, Park Slope, Brooklyn; 7 p.m., $35; bricartsmedia.org
— Charlie Heller

Redferns via Getty Images

SEE A PLAYER!: SQUEEZE PLAY
What can the accordion possibly have to do with wrestling? In Finland, as it turns out, quite a lot. “In the old days, it was really to get more women to see wrestling matches,” quips Finnish composer and accordionist Kimmo Pohjonen, “because accordion players were heroes like Elvis.” Pohjonen, who will stage the odd mix tonight and tomorrow at Lincoln Center Out of Doors, plays everything from classical to Hendrix on the instrument. His wrestlers will perform on a mat that’s wired for sound, creating a multilevel display of movement, music and theater. With Olympic wrestling scheduled for this weekend in London, the timing for the show’s American debut seems more than apt. “It’s a nice coincidence,” Pohjonen says, “and a great opportunity for us to give audiences here some surprises.” 8:30 p.m. at the Damrosch Park Bandshell, 62nd Street at Amsterdam Avenue; lcoutofdoors.org; free
— Bill Murphy